What aircleaner? Condition?
The DJ kit comes with many jets, just knock it back a jet at a time until you get a responce that you do not like or the one you want. Sure it's old school...but it will work with patience. Reading the plug on a KLR now a days isn't as easy as it used to be....why I'm sure others will chime in with pages of reasoning.....
What setting is the pilot jets screw set at? What position is the needle clip set at?
This carb isn't a very complicated carb to play with and tune.
Plus it's free....if your time is that is. You should have all the parts needed already.
I would have a go and write down each adjustment to work to the next stage. OR....you can pay for someone to do it for you. You will appreciate learning afterwards by doing it yourself. Anyone can send it out to get sniffed and pay.....to each their own.
Try one thing, if it gets worse, put it back, try something else.....it isn't rocket science as much as some will want you to think it is. There is one carb, one cylinder and no electrical or mechanical adjustments to make elsewhere.
Not meant to be offensive to you at all.....just motivational.
There are two types of people, people who do and people who pay.